EP 0393523 B1 19951213 - Color developing agent and image forming process
Title (en)
Color developing agent and image forming process
Title (de)
Farbentwickler und Bildherstellungsverfahren
Title (fr)
Agent de développement des couleurs et procédé de formation d'images
Publication
Application
Priority
JP 9661989 A 19890417
Abstract (en)
[origin: EP0393523A2] A p-phenylenediamine series color developing agent or a precursor thereof having a substituent A at the ortho-position; Substituent A: <CHEM> wherein R<1> represents a hydrogen atom or an alkyl group and X represents -O-R<7> or <CHEM> wherein R<7> represents an alkyl group, an aryl group, or a heterocyclic ring and R<8> and R<9>, which may be the same or different, each represents a hydrogen atom, an alkyl group, an aryl group, or a heterocyclic ring, R<8> and R<9> may combine with each other to form a heterocyclic ring, and a process for forming an age which comprises imagewise exposing a silver halide color photographic material and thereafter color-developing the color photographic material in the presence of a p-phenylenediamine series color developing agent or a precursor thereof having the aforesaid substituent A.
IPC 1-7
IPC 8 full level
C07C 271/28 (2006.01); G03C 7/413 (2006.01)
CPC (source: EP US)
C07C 271/28 (2013.01 - EP US); G03C 7/4136 (2013.01 - EP US); Y10S 430/16 (2013.01 - EP US)
Citation (examination)
CHEMICAL ABSTRACTS, vol. 95, no. 1, July 6, 1981, Columbus, Ohio, US; HITACHI CHEM.: "Heat-resistant polymers", p. 40, column 1, abstract-no. 8 258x; & JP-A-80 147 527
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
EP 0393523 A2 19901024; EP 0393523 A3 19911016; EP 0393523 B1 19951213; DE 69024087 D1 19960125; DE 69024087 T2 19960613; JP 2631552 B2 19970716; JP H02275446 A 19901109; US 5310634 A 19940510
DOCDB simple family (application)
EP 90107078 A 19900412; DE 69024087 T 19900412; JP 9661989 A 19890417; US 79009491 A 19911030